肉桂精油的不同提取方法比较  

Comparative of the different methods for extraction of cinnamon essential oil

作　　者：郭娟[1] 杨日福[2] 范晓丹[2] 丘泰球[2] 

机构地区：[1]广东药学院食品科学学院,广东广州510006 [2]华南理工大学轻工与食品学院,广东广州510640

出　　处：《食品工业科技》2014年第14期95-99,102,共6页Science and Technology of Food Industry

基　　金：国家自然科学基金(20776047)

摘　　要：采用水蒸气蒸馏法(SD)、超声波辅助提取法(UAE)、亚临界水提取法(SWE)和超声强化亚临界水提取法(USWE)制备肉桂精油,从提取工艺、肉桂精油成分、物理特性及抗氧化性等方面对4种方法进行比较。结果显示,USWE法提取时间最短(25min),UAE法肉桂精油得率最高(2.10%),但外观性状差,USWE法肉桂醛得率及油中肉桂醛含量均最高;4种精油的主要成分均为肉桂醛,但相对含量差异较大;SD、SWE和USWE法所得精油物理特性相似,与UAE法相差较大;4种精油对DPPH·、·OH、O2-·均有清除作用,且其效果随精油浓度的增加而增强,其中USWE法精油的清除能力明显强于其他方法,以上结果说明,USWE是一种提取肉桂精油较理想的方法,具有提取时间短、效率高、肉桂油品质好等优点。Cinnamon essential oil were prepared by steam distillation （SD）, ultrasonic assisted extraction （UAE）, subcritical water extraction（SWE）,and ultrasound-enhanced subcritical water extraction（USWE）. The extraction parameters,composition, physical characteristics and antioxidant activity of cinnamon essential oil were studied comparatively. Results showed that the extraction time of USWE was the shortest （25min）. The yield of cinnamon oil of UAE was the highest（2.10%）,but with low appearance characters. The yield of cinnamaldehyde from cinnamon and the content of cinnamaldehyde in cinnamon oil of USWE were the highest. Four cinnamon oils from different extraction methods shared the same main ingredient..cinnamaldehyde. However,different methods made a great difference in relative content. The physical characteristics of cinnamon oil from SD,SWE and USWE were very similar,but with high difference compared with cinnamon oil of UAE. The scavenging activity of four cinnamon oils on DPPH radical,hydroxyl radical and superoxide anion radicals were excellent, and the scavenging activity increased with increasing concentration of cinnamon oil. The scavenging activity of cinnamon oil of USWE was significantly superior to other three methods. All of these suggested that ultrasound- enhanced subcritical water extraction（USWE） was an ideal method of extraction of cinnamon essential oil and showed shorter extraction time, high efficiency ,and good product quality, etc. advantage.

关 键 词：肉桂精油 提取 组成 物理特性 抗氧化性 

分 类 号：TS255[轻工技术与工程—农产品加工及贮藏工程]